var xmlHttp

function showResult(str)
{
if (str.length==0)
 { 
 document.getElementById("livesearch").innerHTML="";
 document.getElementById("livesearch").style.border="0px";
 return
 }

xmlHttp=GetXmlHttpObject()

if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 } 

var url="js/livesearch.php"
url=url+"?q="+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
} 

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 info=xmlHttp.responseText;
 if(parseInt(info)==1)
 	{
		document.getElementById("livesearch").innerHTML="<table><tr><td height=\"25\" valign=\"middle\"><img src=\"images/invalid.png\" alt\"\" /></td><td height=\"25\" valign=\"middle\"><span style=\"color:#FF0000\"><b> Username already in use</b></span></td></tr></table>";
		document.getElementById("Submit").disabled=true;	
	}
 else if(parseInt(info)==0)
 	{
		document.getElementById("livesearch").innerHTML="<table><tr ><td height=\"25\" valign=\"middle\"><img src=\"images/valid.png\" alt\"\" /></td><td height=\"25\" valign=\"middle\"><span style=\"color:#079C38\"><b> Username is Valid </b></span></td></tr></table>";
		document.getElementById("Submit").disabled=false;
	}
 } 
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp=new XMLHttpRequest();
 }
catch (e)
 {
 // Internet Explorer
 try
  {
  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}